Add a 'capped' boolean parameter to all drawline/drawLine functions/methods. The idea is that this will produce better joining between lines

22 files changed, 137 insertions, 77 deletions

diff --git a/NxWidgets/libnxwidgets/include/cbgwindow.hxx b/NxWidgets/libnxwidgets/include/cbgwindow.hxx
index 90113cfe9..8a63633bd 100644
--- a/NxWidgets/libnxwidgets/include/cbgwindow.hxx
+++ b/NxWidgets/libnxwidgets/include/cbgwindow.hxx
@@ -1,7 +1,7 @@
 /****************************************************************************
  * NxWidgets/libnxwidgets/include/cbgwindow.hxx
  *
- *   Copyright (C) 2012 Gregory Nutt. All rights reserved.
+ *   Copyright (C) 2012, 2015 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <gnutt@nuttx.org>
  *
  * Redistribution and use in source and binary forms, with or without
@@ -285,13 +285,15 @@ namespace NXWidgets
      * @param vector - Describes the line to be drawn
      * @param width  - The width of the line
      * @param color  - The color to use to fill the line
+     * @param capped - Draw a circular cap both ends of the line to support
+     *                 better line joins
      *
      * @return True on success; false on failure.
      */
 
     bool drawLine(FAR struct nxgl_vector_s *vector,
-                  nxgl_coord_t width,
-                  nxgl_mxpixel_t color);
+                  nxgl_coord_t width, nxgl_mxpixel_t color,
+                  bool capped);
 
     /**
      * Draw a filled circle at the specified position, size, and color.
diff --git a/NxWidgets/libnxwidgets/include/cgraphicsport.hxx b/NxWidgets/libnxwidgets/include/cgraphicsport.hxx
index c5148c8bc..4d529c94d 100644
--- a/NxWidgets/libnxwidgets/include/cgraphicsport.hxx
+++ b/NxWidgets/libnxwidgets/include/cgraphicsport.hxx
@@ -1,7 +1,7 @@
 /****************************************************************************
  * NxWidgets/libnxwidgets/include/cgraphicsport.hxx
  *
- *   Copyright (C) 2012 Gregory Nutt. All rights reserved.
+ *   Copyright (C) 2012, 2015 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <gnutt@nuttx.org>
  *
  * Redistribution and use in source and binary forms, with or without
@@ -242,11 +242,13 @@ namespace NXWidgets
      * @param x2 The x coordinate of the end point of the line.
      * @param y2 The y coordinate of the end point of the line.
      * @param color The color of the line.
+     * @param capped Draw a circular cap both ends of the line to support
+     *  better line joins
      */
 
     void drawLine(nxgl_coord_t x1, nxgl_coord_t y1,
                   nxgl_coord_t x2, nxgl_coord_t y2,
-                  nxgl_mxpixel_t color);
+                  nxgl_mxpixel_t color, bool capped);
 
     /**
      * Draw a filled rectangle of the specified start position, end position,
diff --git a/NxWidgets/libnxwidgets/include/cnxtkwindow.hxx b/NxWidgets/libnxwidgets/include/cnxtkwindow.hxx
index b20bc2a24..1ac801b95 100644
--- a/NxWidgets/libnxwidgets/include/cnxtkwindow.hxx
+++ b/NxWidgets/libnxwidgets/include/cnxtkwindow.hxx
@@ -1,7 +1,7 @@
 /****************************************************************************
  * NxWidgets/libnxwidgets/include/cnxtkwindow.hxx
  *
- *   Copyright (C) 2012 Gregory Nutt. All rights reserved.
+ *   Copyright (C) 2012, 2015 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <gnutt@nuttx.org>
  *
  * Redistribution and use in source and binary forms, with or without
@@ -306,13 +306,15 @@ namespace NXWidgets
      * @param vector - Describes the line to be drawn
      * @param width  - The width of the line
      * @param color  - The color to use to fill the line
+     * @param capped - Draw a circular cap both ends of the line to support
+     *                 better line joins
      *
      * @return True on success; false on failure.
      */
 
     bool drawLine(FAR struct nxgl_vector_s *vector,
-                  nxgl_coord_t width,
-                  nxgl_mxpixel_t color);
+                  nxgl_coord_t width, nxgl_mxpixel_t color,
+                  bool capped);
 
     /**
      * Draw a filled circle at the specified position, size, and color.
diff --git a/NxWidgets/libnxwidgets/include/cnxtoolbar.hxx b/NxWidgets/libnxwidgets/include/cnxtoolbar.hxx
index fd635b206..c7107678e 100644
--- a/NxWidgets/libnxwidgets/include/cnxtoolbar.hxx
+++ b/NxWidgets/libnxwidgets/include/cnxtoolbar.hxx
@@ -1,7 +1,7 @@
 /****************************************************************************
  * NxWidgets/libnxwidgets/include/cnxtoolbar.hxx
  *
- *   Copyright (C) 2012 Gregory Nutt. All rights reserved.
+ *   Copyright (C) 2012, 2015 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <gnutt@nuttx.org>
  *
  * Redistribution and use in source and binary forms, with or without
@@ -275,13 +275,15 @@ namespace NXWidgets
      * @param vector - Describes the line to be drawn
      * @param width  - The width of the line
      * @param color  - The color to use to fill the line
+     * @param capped - Draw a circular cap both ends of the line to suppor
+     *                 better line joins
      *
      * @return True on success; false on failure.
      */
 
     bool drawLine(FAR struct nxgl_vector_s *vector,
-                  nxgl_coord_t width,
-                  nxgl_mxpixel_t color);
+                  nxgl_coord_t width, nxgl_mxpixel_t color,
+                  bool capped);
 
     /**
      * Draw a filled circle at the specified position, size, and color.
diff --git a/NxWidgets/libnxwidgets/include/cnxwindow.hxx b/NxWidgets/libnxwidgets/include/cnxwindow.hxx
index 98f89acc0..21a077954 100644
--- a/NxWidgets/libnxwidgets/include/cnxwindow.hxx
+++ b/NxWidgets/libnxwidgets/include/cnxwindow.hxx
@@ -1,7 +1,7 @@
 /****************************************************************************
  * NxWidgets/libnxwidgets/include/cnxwindow.hxx
  *
- *   Copyright (C) 2012 Gregory Nutt. All rights reserved.
+ *   Copyright (C) 2012, 2015 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <gnutt@nuttx.org>
  *
  * Redistribution and use in source and binary forms, with or without
@@ -279,12 +279,15 @@ namespace NXWidgets
      * @param vector - Describes the line to be drawn
      * @param width  - The width of the line
      * @param color  - The color to use to fill the line
+     * @param capped - Draw a circular cap both ends of the line to support
+     *                 better line joins
      *
      * @return True on success; false on failure.
      */
 
     bool drawLine(FAR struct nxgl_vector_s *vector,
-                  nxgl_coord_t width, nxgl_mxpixel_t color);
+                  nxgl_coord_t width, nxgl_mxpixel_t color,
+                  bool capped);
 
     /**
      * Draw a filled circle at the specified position, size, and color.
diff --git a/NxWidgets/libnxwidgets/include/inxwindow.hxx b/NxWidgets/libnxwidgets/include/inxwindow.hxx
index 3e2f6c4a1..23b99fe90 100644
--- a/NxWidgets/libnxwidgets/include/inxwindow.hxx
+++ b/NxWidgets/libnxwidgets/include/inxwindow.hxx
@@ -1,7 +1,7 @@
 /****************************************************************************
  * NxWidgets/libnxwidgets/include/inxwindow.hxx
  *
- *   Copyright (C) 2012 Gregory Nutt. All rights reserved.
+ *   Copyright (C) 2012, 2015 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <gnutt@nuttx.org>
  *
  * Redistribution and use in source and binary forms, with or without
@@ -249,13 +249,15 @@ namespace NXWidgets
      * @param vector - Describes the line to be drawn
      * @param width  - The width of the line
      * @param color  - The color to use to fill the line
+     * @param capped - Draw a circular cap both ends of the line to support
+     *                 better line joins
      *
      * @return True on success; false on failure.
      */
 
     virtual bool drawLine(FAR struct nxgl_vector_s *vector,
-                          nxgl_coord_t width,
-                          nxgl_mxpixel_t color) = 0;
+                          nxgl_coord_t width, nxgl_mxpixel_t color,
+                          bool capped) = 0;
 
     /**
      * Draw a filled circle at the specified position, size, and color.
diff --git a/NxWidgets/libnxwidgets/src/cbgwindow.cxx b/NxWidgets/libnxwidgets/src/cbgwindow.cxx
index 2cb3d2389..979cb3aeb 100644
--- a/NxWidgets/libnxwidgets/src/cbgwindow.cxx
+++ b/NxWidgets/libnxwidgets/src/cbgwindow.cxx
@@ -1,7 +1,7 @@
 /****************************************************************************
  * NxWidgets/libnxwidgets/src/cbgwindow.cxx
  *
- *   Copyright (C) 2012 Gregory Nutt. All rights reserved.
+ *   Copyright (C) 2012, 2015 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <gnutt@nuttx.org>
  *
  * Redistribution and use in source and binary forms, with or without
@@ -308,16 +308,19 @@ bool CBgWindow::fillTrapezoid(FAR const struct nxgl_rect_s *pClip,
  * @param vector - Describes the line to be drawn
  * @param width  - The width of the line
  * @param color  - The color to use to fill the line
+ * @param capped - Draw a circular cap both ends of the line to support
+ *                 better line joins
  *
  * @return True on success; false on failure.
  */
 
 bool CBgWindow::drawLine(FAR struct nxgl_vector_s *vector,
-                         nxgl_coord_t width, nxgl_mxpixel_t color)
+                         nxgl_coord_t width, nxgl_mxpixel_t color,
+                         bool capped)
 {
   // Draw a line with the specified color
 
-  return nx_drawline(m_hWindow, vector, width, &color) == OK;
+  return nx_drawline(m_hWindow, vector, width, &color, capped) == OK;
 }
 
 /**
diff --git a/NxWidgets/libnxwidgets/src/cgraphicsport.cxx b/NxWidgets/libnxwidgets/src/cgraphicsport.cxx
index 5791ab773..d3fcdd3b5 100644
--- a/NxWidgets/libnxwidgets/src/cgraphicsport.cxx
+++ b/NxWidgets/libnxwidgets/src/cgraphicsport.cxx
@@ -1,7 +1,7 @@
 /****************************************************************************
  * NxWidgets/libnxwidgets/src/cgraphicsport.cxx
  *
- *   Copyright (C) 2012 Gregory Nutt. All rights reserved.
+ *   Copyright (C) 2012, 2015 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <gnutt@nuttx.org>
  *
  * Redistribution and use in source and binary forms, with or without
@@ -241,16 +241,18 @@ void CGraphicsPort::drawVertLine(nxgl_coord_t x, nxgl_coord_t y,
 /**
  * Draw a line of a fixed color in the window.
  *
- * @param x1 The x coordinate of the start point of the line.
- * @param y1 The y coordinate of the start point of the line.
- * @param x2 The x coordinate of the end point of the line.
- * @param y2 The y coordinate of the end point of the line.
- * @param color The color of the line.
+ * @param x1     - The x coordinate of the start point of the line.
+ * @param y1     - The y coordinate of the start point of the line.
+ * @param x2     - The x coordinate of the end point of the line.
+ * @param y2     - The y coordinate of the end point of the line.
+ * @param color  - The color of the line.
+ * @param capped - Draw a circular cap both ends of the line to support
+ *               - better line joins
  */
 
 void CGraphicsPort::drawLine(nxgl_coord_t x1, nxgl_coord_t y1,
                              nxgl_coord_t x2, nxgl_coord_t y2,
-                             nxgl_mxpixel_t color)
+                             nxgl_mxpixel_t color, bool capped)
 {
   struct nxgl_vector_s vector;
 
@@ -259,7 +261,7 @@ void CGraphicsPort::drawLine(nxgl_coord_t x1, nxgl_coord_t y1,
   vector.pt2.x = x2;
   vector.pt2.y = y2;
 
-  if (!m_pNxWnd->drawLine(&vector, 1, color))
+  if (!m_pNxWnd->drawLine(&vector, 1, color, capped))
     {
       gdbg("INxWindow::drawLine failed\n");
     }
diff --git a/NxWidgets/libnxwidgets/src/cnxtkwindow.cxx b/NxWidgets/libnxwidgets/src/cnxtkwindow.cxx
index 57ca5eb2b..14e07dbbb 100644
--- a/NxWidgets/libnxwidgets/src/cnxtkwindow.cxx
+++ b/NxWidgets/libnxwidgets/src/cnxtkwindow.cxx
@@ -1,7 +1,7 @@
 /****************************************************************************
  * NxWidgets/libnxwidgets/src/cnxtkwindow.cxx
  *
- *   Copyright (C) 2012 Gregory Nutt. All rights reserved.
+ *   Copyright (C) 2012, 2015 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <gnutt@nuttx.org>
  *
  * Redistribution and use in source and binary forms, with or without
@@ -442,16 +442,19 @@ bool CNxTkWindow::fillTrapezoid(FAR const struct nxgl_rect_s *pClip,
  * @param vector - Describes the line to be drawn
  * @param width  - The width of the line
  * @param color  - The color to use to fill the line
+ * @param capped - Draw a circular cap both ends of the line to support
+ *                 better line joins
  *
  * @return True on success; false on failure.
  */
 
 bool CNxTkWindow::drawLine(FAR struct nxgl_vector_s *vector,
-                           nxgl_coord_t width, nxgl_mxpixel_t color)
+                           nxgl_coord_t width, nxgl_mxpixel_t color,
+                           bool capped)
 {
   // Draw a line with the specified color
 
-  return nxtk_drawlinewindow(m_hNxTkWindow, vector, width, &color) == OK;
+  return nxtk_drawlinewindow(m_hNxTkWindow, vector, width, &color, capped) == OK;
 }
 
 /**
diff --git a/NxWidgets/libnxwidgets/src/cnxtoolbar.cxx b/NxWidgets/libnxwidgets/src/cnxtoolbar.cxx
index 3c336f06a..01b72e32f 100644
--- a/NxWidgets/libnxwidgets/src/cnxtoolbar.cxx
+++ b/NxWidgets/libnxwidgets/src/cnxtoolbar.cxx
@@ -1,7 +1,7 @@
 /****************************************************************************
  * NxWidgets/libnxwidgets/src/cnxtoolbar.cxx
  *
- *   Copyright (C) 2012 Gregory Nutt. All rights reserved.
+ *   Copyright (C) 2012, 2015 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <gnutt@nuttx.org>
  *
  * Redistribution and use in source and binary forms, with or without
@@ -313,16 +313,19 @@ bool CNxToolbar::fillTrapezoid(FAR const struct nxgl_rect_s *pClip,
  * @param vector - Describes the line to be drawn
  * @param width  - The width of the line
  * @param color  - The color to use to fill the line
+ * @param capped - Draw a circular cap both ends of the line to support
+ *                 better line joins
  *
  * @return True on success; false on failure.
  */
 
 bool CNxToolbar::drawLine(FAR struct nxgl_vector_s *vector,
-                          nxgl_coord_t width, nxgl_mxpixel_t color)
+                          nxgl_coord_t width, nxgl_mxpixel_t color,
+                          bool capped)
 {
   // Draw a line with the specified color
 
-  return nxtk_drawlinetoolbar(m_hNxTkWindow, vector, width, &color) == OK;
+  return nxtk_drawlinetoolbar(m_hNxTkWindow, vector, width, &color, capped) == OK;
 }
 
 /**
diff --git a/NxWidgets/libnxwidgets/src/cnxwindow.cxx b/NxWidgets/libnxwidgets/src/cnxwindow.cxx
index 046660774..c600ecd1b 100644
--- a/NxWidgets/libnxwidgets/src/cnxwindow.cxx
+++ b/NxWidgets/libnxwidgets/src/cnxwindow.cxx
@@ -1,7 +1,7 @@
 /****************************************************************************
  * NxWidgets/libnxwidgets/src/cnxwindow.cxx
  *
- *   Copyright (C) 2012 Gregory Nutt. All rights reserved.
+ *   Copyright (C) 2012, 2015 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <gnutt@nuttx.org>
  *
  * Redistribution and use in source and binary forms, with or without
@@ -286,16 +286,19 @@ bool CNxWindow::fillTrapezoid(FAR const struct nxgl_rect_s *pClip,
  * @param vector - Describes the line to be drawn
  * @param width  - The width of the line
  * @param color  - The color to use to fill the line
+ * @param capped - Draw a circular cap both ends of the line to support
+ *                 better line joins
  *
  * @return True on success; false on failure.
  */
 
 bool CNxWindow::drawLine(FAR struct nxgl_vector_s *vector,
-                         nxgl_coord_t width, nxgl_mxpixel_t color)
+                         nxgl_coord_t width, nxgl_mxpixel_t color,
+                         bool capped)
 {
   // Draw a line with the specified color
 
-  return nx_drawline(m_hNxWindow, vector, width, &color) == OK;
+  return nx_drawline(m_hNxWindow, vector, width, &color, capped) == OK;
 }
 
 /**
diff --git a/apps/examples/nxlines/nxlines_bkgd.c b/apps/examples/nxlines/nxlines_bkgd.c
index dcf2a10bd..42cd98451 100644
--- a/apps/examples/nxlines/nxlines_bkgd.c
+++ b/apps/examples/nxlines/nxlines_bkgd.c
@@ -1,7 +1,7 @@
 /****************************************************************************
  * examples/nxlines/nxlines_bkgd.c
  *
- *   Copyright (C) 2011-2012 Gregory Nutt. All rights reserved.
+ *   Copyright (C) 2011-2012, 2015 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <gnutt@nuttx.org>
  *
  * Redistribution and use in source and binary forms, with or without
@@ -293,7 +293,8 @@ void nxlines_test(NXWINDOW hwnd)
       /* Clear the previous line by overwriting it with the circle color */
 
       color[0] = CONFIG_EXAMPLES_NXLINES_CIRCLECOLOR;
-      ret = nx_drawline((NXWINDOW)hwnd, &previous, CONFIG_EXAMPLES_NXLINES_LINEWIDTH, color);
+      ret = nx_drawline((NXWINDOW)hwnd, &previous,
+                        CONFIG_EXAMPLES_NXLINES_LINEWIDTH, color, false);
       if (ret < 0)
         {
           printf("nxlines_test: nx_drawline failed clearing: %d\n", ret);
@@ -302,7 +303,8 @@ void nxlines_test(NXWINDOW hwnd)
       /* Draw the new line */
 
       color[0] = CONFIG_EXAMPLES_NXLINES_LINECOLOR;
-      ret = nx_drawline((NXWINDOW)hwnd, &vector, CONFIG_EXAMPLES_NXLINES_LINEWIDTH, color);
+      ret = nx_drawline((NXWINDOW)hwnd, &vector,
+                        CONFIG_EXAMPLES_NXLINES_LINEWIDTH, color, false);
       if (ret < 0)
         {
           printf("nxlines_test: nx_drawline failed clearing: %d\n", ret);
diff --git a/nuttx/Documentation/NXGraphicsSubsystem.html b/nuttx/Documentation/NXGraphicsSubsystem.html
index c8c3e0b83..d13a115b5 100644
--- a/nuttx/Documentation/NXGraphicsSubsystem.html
+++ b/nuttx/Documentation/NXGraphicsSubsystem.html
@@ -12,7 +12,7 @@
       <h1><big><font color="#3c34ec">
         <i>NX Graphics Subsystem</i>
       </font></big></h1>
-      <p>Last Updated: December 28, 2013</p>
+      <p>Last Updated: April 5, 2015</p>
     </td>
   </tr>
 </table>
@@ -1759,7 +1759,8 @@ int nx_filltrapezoid(NXWINDOW hwnd, FAR const struct nxgl_rect_s *clip,
 #include &lt;nuttx/nx/nx.h&gt;
 
 int nx_drawline(NXWINDOW hwnd, FAR struct nxgl_vector_s *vector,
-               nxgl_coord_t width, nxgl_mxpixel_t color[CONFIG_NX_NPLANES]);
+               nxgl_coord_t width, nxgl_mxpixel_t color[CONFIG_NX_NPLANES],
+               bool capped);
 </pre></ul>
 <p>
   <b>Description:</b>
@@ -1780,6 +1781,8 @@ int nx_drawline(NXWINDOW hwnd, FAR struct nxgl_vector_s *vector,
       <dd>The width of the line
     <dt><code>color</code>
       <dd>The color to use to fill the line
+    <dt><code>capped</code>
+      <dd>Draw a circular cap both ends of the line to support better line joins
   </dl></ul>
 </p>
 <p>
@@ -2385,7 +2388,8 @@ int nxtk_filltrapwindow(NXTKWINDOW hfwnd,
 #include &lt;nuttx/nx/nxtk.h&gt;
 
 int nxtk_drawlinewindow(NXTKWINDOW hfwnd, FAR struct nxgl_vector_s *vector,
-                        nxgl_coord_t width, nxgl_mxpixel_t color[CONFIG_NX_NPLANES]);
+                        nxgl_coord_t width, nxgl_mxpixel_t color[CONFIG_NX_NPLANES],
+                        bool capped);
 </pre></ul>
 <p>
   <b>Description:</b>
@@ -2406,6 +2410,8 @@ int nxtk_drawlinewindow(NXTKWINDOW hfwnd, FAR struct nxgl_vector_s *vector,
       <dd>The width of the line
     <dt><code>color</code>
       <dd>The color to use to fill the line
+    <dt><code>capped</code>
+      <dd>Draw a circular cap both ends of the line to support better line joins
   </dl></ul>
 </p>
 <p>
@@ -2738,7 +2744,8 @@ int nxtk_filltraptoolbar(NXTKWINDOW hfwnd, FAR const struct nxgl_trapezoid_s *tr
 #include &lt;nuttx/nx/nxtk.h&gt;
 
 int nxtk_drawlinetoolbar(NXTKWINDOW hfwnd, FAR struct nxgl_vector_s *vector,
-                         nxgl_coord_t width, nxgl_mxpixel_t color[CONFIG_NX_NPLANES]);
+                         nxgl_coord_t width, nxgl_mxpixel_t color[CONFIG_NX_NPLANES],
+                         capped);
 
 </pre></ul>
 <p>
@@ -2759,6 +2766,8 @@ int nxtk_drawlinetoolbar(NXTKWINDOW hfwnd, FAR struct nxgl_vector_s *vector,
       <dd>The width of the line
     <dt><code>color</code>
       <dd>The color to use to fill the line
+    <dt><code>capped</code>
+      <dd>Draw a circular cap both ends of the line to support better line joins
   </dl></ul>
 </p>
 <p>
diff --git a/nuttx/TODO b/nuttx/TODO
index d0d4027f3..373a586f7 100644
--- a/nuttx/TODO
+++ b/nuttx/TODO
@@ -880,20 +880,24 @@ o Network (net/, drivers/net)
                should be eliminated).  This applies to almost all Ethernet
                drivers:
 
-               ARCHITECTURE   CONFIG_NET_NOINTS
-               C5471          NO
-               STM32          YES <<
-               TIVA/LM3S      NO
-               TIVA/TM4C      YES <<
-               eZ80           NO
-               LPC17xx        YES <<
-               DMxxx NIC      NO
-               PIC32          NO
-               RGMP           NO
-               SAM3/4         YES <<
-               SAMA5D3        NO
-               SAMA5D4        YES <<
-               SIM            N/A << Doesn't support interrupts
+               ARCHITECTURE   CONFIG_NET_NOINTS?      ADDRESS FILTER SUPPORT?
+               C5471          NO                      NO
+               STM32          YES                     YES
+               TIVA           ----------------------- ------
+                 LM3S         NO                      NO
+                 TM4C         YES                     YES
+               eZ80           NO                      NO
+               LPC17xx        YES (could be issues)   YES (not tested)
+               DMxxx NIC      NO                      NO
+               PIC32          NO                      NO
+               RGMP           ???                     ???
+               SAM3/4         YES                     YES
+               SAMA5D         ----------------------- ------
+                 EMACA        NO                      YES (not tested)
+                 EMACB        YES                     YES
+                 GMAC         NO                      YES (not tested)
+               SAMV7          YES                     YES
+               SIM            N/A  (No interrupts)    NO
 
                The general outline of how this might be done is included in
                drivers/net/skeleton.c
diff --git a/nuttx/include/nuttx/nx/nx.h b/nuttx/include/nuttx/nx/nx.h
index 6093a0878..6f8077f61 100644
--- a/nuttx/include/nuttx/nx/nx.h
+++ b/nuttx/include/nuttx/nx/nx.h
@@ -1,7 +1,7 @@
 /****************************************************************************
  * include/nuttx/nx/nx.h
  *
- *   Copyright (C) 2008-2011 Gregory Nutt. All rights reserved.
+ *   Copyright (C) 2008-2011, 2015 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <gnutt@nuttx.org>
  *
  * Redistribution and use in source and binary forms, with or without
@@ -776,6 +776,8 @@ int nx_filltrapezoid(NXWINDOW hwnd, FAR const struct nxgl_rect_s *clip,
  *   vector - Describes the line to be drawn
  *   width  - The width of the line
  *   color  - The color to use to fill the line
+ *   capped - Draw a circular cap both ends of the line to support better
+ *            line joins
  *
  * Return:
  *   OK on success; ERROR on failure with errno set appropriately
@@ -783,7 +785,8 @@ int nx_filltrapezoid(NXWINDOW hwnd, FAR const struct nxgl_rect_s *clip,
  ****************************************************************************/
 
 int nx_drawline(NXWINDOW hwnd, FAR struct nxgl_vector_s *vector,
-                nxgl_coord_t width, nxgl_mxpixel_t color[CONFIG_NX_NPLANES]);
+                nxgl_coord_t width, nxgl_mxpixel_t color[CONFIG_NX_NPLANES],
+                bool capped);
 
 /****************************************************************************
  * Name: nx_drawcircle
diff --git a/nuttx/include/nuttx/nx/nxtk.h b/nuttx/include/nuttx/nx/nxtk.h
index eb0d9df6f..7b7d76212 100644
--- a/nuttx/include/nuttx/nx/nxtk.h
+++ b/nuttx/include/nuttx/nx/nxtk.h
@@ -1,7 +1,7 @@
 /****************************************************************************
  * include/nuttx/nx/nxtk.h
  *
- *   Copyright (C) 2008-2012 Gregory Nutt. All rights reserved.
+ *   Copyright (C) 2008-2012, 2015 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <gnutt@nuttx.org>
  *
  * Redistribution and use in source and binary forms, with or without
@@ -354,6 +354,8 @@ EXTERN int nxtk_filltrapwindow(NXTKWINDOW hfwnd,
  *   vector - Describes the line to be drawn
  *   width  - The width of the line
  *   color  - The color to use to fill the line
+ *   capped - Draw a circular cap both ends of the line to support better
+ *            line joins
  *
  * Return:
  *   OK on success; ERROR on failure with errno set appropriately
@@ -363,7 +365,8 @@ EXTERN int nxtk_filltrapwindow(NXTKWINDOW hfwnd,
 EXTERN int nxtk_drawlinewindow(NXTKWINDOW hfwnd,
                               FAR struct nxgl_vector_s *vector,
                               nxgl_coord_t width,
-                              nxgl_mxpixel_t color[CONFIG_NX_NPLANES]);
+                              nxgl_mxpixel_t color[CONFIG_NX_NPLANES],
+                              bool capped);
 
 /****************************************************************************
  * Name: nxtk_drawcirclewindow
@@ -598,6 +601,8 @@ EXTERN int nxtk_filltraptoolbar(NXTKWINDOW hfwnd, FAR const struct nxgl_trapezoi
  *   vector - Describes the line to be drawn
  *   width  - The width of the line
  *   color  - The color to use to fill the line
+ *   capped - Draw a circular cap both ends of the line to support better
+ *            line joins
  *
  * Return:
  *   OK on success; ERROR on failure with errno set appropriately
@@ -607,7 +612,8 @@ EXTERN int nxtk_filltraptoolbar(NXTKWINDOW hfwnd, FAR const struct nxgl_trapezoi
 EXTERN int nxtk_drawlinetoolbar(NXTKWINDOW hfwnd,
                                 FAR struct nxgl_vector_s *vector,
                                 nxgl_coord_t width,
-                                nxgl_mxpixel_t color[CONFIG_NX_NPLANES]);
+                                nxgl_mxpixel_t color[CONFIG_NX_NPLANES],
+                                bool capped);
 
 /****************************************************************************
  * Name: nxtk_drawcircletoolbar
diff --git a/nuttx/libnx/nx/nx_drawcircle.c b/nuttx/libnx/nx/nx_drawcircle.c
index 97f0a4e3f..ea279a45d 100644
--- a/nuttx/libnx/nx/nx_drawcircle.c
+++ b/nuttx/libnx/nx/nx_drawcircle.c
@@ -1,7 +1,7 @@
 /****************************************************************************
  * libnx/nx/nx_drawcircle.c
  *
- *   Copyright (C) 2011, 2013 Gregory Nutt. All rights reserved.
+ *   Copyright (C) 2011, 2013, 2015 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <gnutt@nuttx.org>
  *
  * Redistribution and use in source and binary forms, with or without
@@ -128,7 +128,7 @@ int nx_drawcircle(NXWINDOW hwnd, FAR const struct nxgl_point_s *center,
       vector.pt1.y = pts[i].y;
       vector.pt2.x = pts[i+1].x;
       vector.pt2.y = pts[i+1].y;
-      ret = nx_drawline(hwnd, &vector, width, color);
+      ret = nx_drawline(hwnd, &vector, width, color, true);
       if (ret != OK)
         {
           return ret;
@@ -141,5 +141,5 @@ int nx_drawcircle(NXWINDOW hwnd, FAR const struct nxgl_point_s *center,
   vector.pt1.y = pts[POINT_337p5].y;
   vector.pt2.x = pts[POINT_0p0].x;
   vector.pt2.y = pts[POINT_0p0].y;
-  return nx_drawline(hwnd, &vector, width, color);
+  return nx_drawline(hwnd, &vector, width, color, true);
 }
diff --git a/nuttx/libnx/nx/nx_drawline.c b/nuttx/libnx/nx/nx_drawline.c
index ac47a4418..f29c3b609 100644
--- a/nuttx/libnx/nx/nx_drawline.c
+++ b/nuttx/libnx/nx/nx_drawline.c
@@ -1,7 +1,7 @@
 /****************************************************************************
  * libnx/nx/nx_drawline.c
  *
- *   Copyright (C) 2011 Gregory Nutt. All rights reserved.
+ *   Copyright (C) 2011, 2015 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <gnutt@nuttx.org>
  *
  * Redistribution and use in source and binary forms, with or without
@@ -83,6 +83,8 @@
  *   vector - Describes the line to be drawn
  *   width  - The width of the line
  *   color  - The color to use to fill the line
+ *   capped - Draw a circular cap both ends of the line to support better
+ *            line joins
  *
  * Return:
  *   OK on success; ERROR on failure with errno set appropriately
@@ -90,7 +92,8 @@
  ****************************************************************************/
 
 int nx_drawline(NXWINDOW hwnd, FAR struct nxgl_vector_s *vector,
-                nxgl_coord_t width, nxgl_mxpixel_t color[CONFIG_NX_NPLANES])
+                nxgl_coord_t width, nxgl_mxpixel_t color[CONFIG_NX_NPLANES],
+                bool capped)
 {
   struct nxgl_trapezoid_s trap[3];
   struct nxgl_rect_s rect;
diff --git a/nuttx/libnx/nxtk/nxtk_drawcircletoolbar.c b/nuttx/libnx/nxtk/nxtk_drawcircletoolbar.c
index fa7905cd4..3aab9fd6e 100644
--- a/nuttx/libnx/nxtk/nxtk_drawcircletoolbar.c
+++ b/nuttx/libnx/nxtk/nxtk_drawcircletoolbar.c
@@ -1,7 +1,7 @@
 /****************************************************************************
  * libnx/nxtk/nxtk_drawcircletoolbar.c
  *
- *   Copyright (C) 2011 Gregory Nutt. All rights reserved.
+ *   Copyright (C) 2011, 2015 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <gnutt@nuttx.org>
  *
  * Redistribution and use in source and binary forms, with or without
@@ -128,7 +128,7 @@ int nxtk_drawcircletoolbar(NXTKWINDOW hfwnd, FAR const struct nxgl_point_s *cent
       vector.pt1.y = pts[i].y;
       vector.pt2.x = pts[i+1].x;
       vector.pt2.y = pts[i+1].y;
-      ret = nxtk_drawlinetoolbar(hfwnd, &vector, width, color);
+      ret = nxtk_drawlinetoolbar(hfwnd, &vector, width, color, true);
       if (ret != OK)
         {
           return ret;
@@ -141,5 +141,5 @@ int nxtk_drawcircletoolbar(NXTKWINDOW hfwnd, FAR const struct nxgl_point_s *cent
   vector.pt1.y = pts[POINT_337p5].y;
   vector.pt2.x = pts[POINT_0p0].x;
   vector.pt2.y = pts[POINT_0p0].y;
-  return nxtk_drawlinetoolbar(hfwnd, &vector, width, color);
+  return nxtk_drawlinetoolbar(hfwnd, &vector, width, color, true);
 }
diff --git a/nuttx/libnx/nxtk/nxtk_drawcirclewindow.c b/nuttx/libnx/nxtk/nxtk_drawcirclewindow.c
index ec0fe6312..38435d943 100644
--- a/nuttx/libnx/nxtk/nxtk_drawcirclewindow.c
+++ b/nuttx/libnx/nxtk/nxtk_drawcirclewindow.c
@@ -1,7 +1,7 @@
 /****************************************************************************
  * libnx/nxtk/nxtk_drawcirclewindow.c
  *
- *   Copyright (C) 2011 Gregory Nutt. All rights reserved.
+ *   Copyright (C) 2011, 2015 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <gnutt@nuttx.org>
  *
  * Redistribution and use in source and binary forms, with or without
@@ -128,7 +128,7 @@ int nxtk_drawcirclewindow(NXTKWINDOW hfwnd, FAR const struct nxgl_point_s *cente
       vector.pt1.y = pts[i].y;
       vector.pt2.x = pts[i+1].x;
       vector.pt2.y = pts[i+1].y;
-      ret = nxtk_drawlinewindow(hfwnd, &vector, width, color);
+      ret = nxtk_drawlinewindow(hfwnd, &vector, width, color, true);
       if (ret != OK)
         {
           return ret;
@@ -141,5 +141,5 @@ int nxtk_drawcirclewindow(NXTKWINDOW hfwnd, FAR const struct nxgl_point_s *cente
   vector.pt1.y = pts[POINT_337p5].y;
   vector.pt2.x = pts[POINT_0p0].x;
   vector.pt2.y = pts[POINT_0p0].y;
-  return nxtk_drawlinewindow(hfwnd, &vector, width, color);
+  return nxtk_drawlinewindow(hfwnd, &vector, width, color, true);
 }
diff --git a/nuttx/libnx/nxtk/nxtk_drawlinetoolbar.c b/nuttx/libnx/nxtk/nxtk_drawlinetoolbar.c
index 2bcb8b890..8c2810ce3 100644
--- a/nuttx/libnx/nxtk/nxtk_drawlinetoolbar.c
+++ b/nuttx/libnx/nxtk/nxtk_drawlinetoolbar.c
@@ -1,7 +1,7 @@
 /****************************************************************************
  * libnx/nxtk/nxtk_drawlinetoolbar.c
  *
- *   Copyright (C) 2011 Gregory Nutt. All rights reserved.
+ *   Copyright (C) 2011, 2015 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <gnutt@nuttx.org>
  *
  * Redistribution and use in source and binary forms, with or without
@@ -85,6 +85,8 @@
  *   vector - Describes the line to be drawn
  *   width  - The width of the line
  *   color  - The color to use to fill the line
+ *   capped - Draw a circular cap both ends of the line to support better
+ *            line joins
  *
  * Return:
  *   OK on success; ERROR on failure with errno set appropriately
@@ -92,7 +94,8 @@
  ****************************************************************************/
 
 int nxtk_drawlinetoolbar(NXTKWINDOW hfwnd,  FAR struct nxgl_vector_s *vector,
-                         nxgl_coord_t width, nxgl_mxpixel_t color[CONFIG_NX_NPLANES])
+                         nxgl_coord_t width, nxgl_mxpixel_t color[CONFIG_NX_NPLANES],
+                         bool capped)
 
 {
   struct nxgl_trapezoid_s trap[3];
diff --git a/nuttx/libnx/nxtk/nxtk_drawlinewindow.c b/nuttx/libnx/nxtk/nxtk_drawlinewindow.c
index 176f60b82..8183bf79d 100644
--- a/nuttx/libnx/nxtk/nxtk_drawlinewindow.c
+++ b/nuttx/libnx/nxtk/nxtk_drawlinewindow.c
@@ -1,7 +1,7 @@
 /****************************************************************************
  * libnx/nxtk/nxtk_drawlinewindow.c
  *
- *   Copyright (C) 2011 Gregory Nutt. All rights reserved.
+ *   Copyright (C) 2011, 2015 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <gnutt@nuttx.org>
  *
  * Redistribution and use in source and binary forms, with or without
@@ -84,6 +84,8 @@
  *   vector - Describes the line to be drawn
  *   width  - The width of the line
  *   color  - The color to use to fill the line
+ *   capped - Draw a circular cap both ends of the line to support better
+ *            line joins
  *
  * Return:
  *   OK on success; ERROR on failure with errno set appropriately
@@ -91,7 +93,8 @@
  ****************************************************************************/
 
 int nxtk_drawlinewindow(NXTKWINDOW hfwnd, FAR struct nxgl_vector_s *vector,
-                        nxgl_coord_t width, nxgl_mxpixel_t color[CONFIG_NX_NPLANES])
+                        nxgl_coord_t width, nxgl_mxpixel_t color[CONFIG_NX_NPLANES],
+                        bool capped)
 
 {
   struct nxgl_trapezoid_s trap[3];